diff --git a/projects/mips_sys/ise92/mips_sys/mips_sys.prj b/projects/mips_sys/ise92/mips_sys/mips_sys.prj
index 0f38437..1583ff2 100644
--- a/projects/mips_sys/ise92/mips_sys/mips_sys.prj
+++ b/projects/mips_sys/ise92/mips_sys/mips_sys.prj
@@ -35,6 +35,7 @@ vhdl work "../../../../lib/uart/uart_wb.vhd"
 vhdl work "../../../../lib/misc/rom_wb.vhd"
 vhdl work "../../../../lib/misc/ram_wb.vhd"
 vhdl work "../../../../lib/misc/lcd_port.vhd"
+vhdl work "../../../../lib/misc/gpio_wb.vhd"
 vhdl work "../../../../lib/misc/clockgen_virtex4.vhd"
 vhdl work "../../../../lib/misc/async_port_wb.vhd"
 vhdl work "../../../../lib/VGA_ctrl/src/vga_frontend.vhd"
diff --git a/projects/mips_sys/ise92/mips_sys/mips_sys_vhdl.prj b/projects/mips_sys/ise92/mips_sys/mips_sys_vhdl.prj
index c5a55bd..170d57b 100644
--- a/projects/mips_sys/ise92/mips_sys/mips_sys_vhdl.prj
+++ b/projects/mips_sys/ise92/mips_sys/mips_sys_vhdl.prj
@@ -35,6 +35,7 @@ vhdl work "W:\vhdl\lib\uart\uart_wb.vhd"
 vhdl work "W:\vhdl\lib\misc\rom_wb.vhd"
 vhdl work "W:\vhdl\lib\misc\ram_wb.vhd"
 vhdl work "W:\vhdl\lib\misc\lcd_port.vhd"
+vhdl work "W:\vhdl\lib\misc\gpio_wb.vhd"
 vhdl work "W:\vhdl\lib\misc\clockgen_virtex4.vhd"
 vhdl work "W:\vhdl\lib\misc\async_port_wb.vhd"
 vhdl work "W:\vhdl\lib\VGA_ctrl\src\vga_frontend.vhd"